Deere + Company

Degudent Gmbh

Bernd Kempf

Heinrich Scheid

Joseph Albert Teijido

Stefan Bohrer

Werner Stettler

Klaus Ernst Becker

Jürgen Hofer

Klaus H Pauli

Robert W Hawkins

Johann Hwang Pierce

J&ouml;rg Weissig

Serge Favache

Helmut Weis

Wolfgang H Roth

Daniel Ray Anderson

Karl Rabung

Jeffrey Lee Wigand

Wolfgang VonMeltzing

Werner Groll

Jurgen Hofer

Gernot Schock

A mechanism for powering a combine header unit at infinitely variable speeds. A primary motor is coupled to a primary input shaft via a clutch, a variable-speed secondary motor is directly coupled to a secondary input shaft, and the header unit coupled to a header output shaft. A planetary gear-train couples the primary input shaft, the secondary input shaft, and the header output shaft to each other. A primary brake is coupled to the primary input shaft, and a secondary brake coupled to the secondary input shaft. A control circuit is employed to command the operation of the clutch, the secondary motor, the primary brake, and the secondary brake in response to operator commands.

Infinitely variable transmission for a combine header unit

A self-propelled forage harvester includes front and rear sets of driven ground wheels. The front set of wheels is driven through a transmission including an input shaft driven by a variable displacement motor and coupled to the front set of wheels by a gear train including one planetary gear set, (in one embodiment), and two planetary gear sets, (in a second embodiment). In both cases, the transmission is shiftable so as to establish at least first and second gear ratios. The shifting of the transmission is accomplished automatically by a control arrangement which takes into account the operating mode of the harvester so that a ratio for producing the correct velocity range for harvesting is established when the harvester is in a working operating mode, and a higher velocity range is established when the harvester is in a transport operating mode. Other operating parameters are sensed and used to automatically control hydraulic pump and/or motor displacement, and for controlling engine speed.

Drive system of a self-propelled working machine

A drive system for use in utility vehicles, such as agricultural forage harvesters and combines, includes a hydrostatic transmission having a pump driven by a main engine of the vehicle and having first and second motors respectively coupled to front and rear axles of the vehicle by way of first and second differential gear sets. The pump and one or both of the motors have a variable displacement determined by positioning respective swash plates through the agency of a lever, in the case of the pump, and by electronic devices, in the case of the motors, the electronic devices acting in response to control signals sent by a control arrangement, which in turn, operates in response to signals produced by pressure sensors associated with the motors and by signals produced by speed sensors associated with output shafts of the hydraulic motors. The control arrangement has a memory for storage of data, such as maximum legal ground speed and the ratio of the speeds of the axles as results from a given wheel size, and uses this information for controlling the hydrostatic transmission such that the vehicle does not exceed the speed, and the front and rear axles are driven so as to produce the same ground speed.

Drive system of a utility vehicle

A forage harvester is equipped with a safety device which incorporates controls that monitor various operating conditions including an operator's presence and apply a brake for stopping any possible rotation of the cutting drum whenever an unsafe condition for the operator exists.

Safety arrangement of a harvesting machine

A drive system for a crop processing device and for a crop transport device of a forage harvester, can be operated at least in a first operational mode and in a second operational mode. In the first operational mode, the crop processing device is driven by a first drive power supplying device, and at least part of the drive power is made available to the crop transport device by a second drive power supplying device. The second drive power supplying device is a reversible, variable speed device and is solely coupled to the crop processing device when the drive system is in a second operational mode. In order to prevent a movement of the crop transport device in the second operational mode, in which, e.g., the crop processing device can be worked with a sharpening device, a stop device is suggested that stops the crop transport device in the second operational mode.

Drive system for a crop processing device and for a crop transport device of a harvesting machine

The invention concerns a drive arrangement of a crop conveying and/or processing mechanism of a harvesting machine with an internal combustion engine (,) that is arranged to drive the crop conveying and/or processing mechanism through power transmission elements in a first operating mode in a first direction at a first speed, and a reversible motor (,) that is arranged to drive the crop conveying and/or processing mechanism in a second operating mode at a second speed in a second direction that differs from the first direction. The drive arrangement is also able to be driven in one or both of third and fourth operating modes. In the third operating mode the reversible motor (,) drives the crop conveying and/or processing mechanism in the first direction at a third speed, that is lower than the first speed and in the fourth operating mode the drive of the crop conveying and/or processing mechanism is separated from the internal combustion engine (,) and the reversible motor (,) operates as a brake for the crop conveying and/or processing mechanism.

Drive arrangement for the crop conveying and/or processing mechanism of a harvesting machine

A drive transmission for the feed rolls of a forage harvester includes a planetary gear set arranged such that an input shaft drives the sun gear while a further input shaft is provided by a reversible, variable speed motor that is connected to the ring gear of the planetary gear set so as to effect speed and direction changes in the output of the planetary gear set that is defined by the planet carrier. Thus, the length of cut of crop products fed to the cutterhead by the feed rolls is controlled by varying the speed of the motor in order to vary the delivery speed of the feed rolls.

Ensilage harvester variable speed feed roll drive

A vehicle (10) intended for operation on level ground is equipped with a chassis (22) and a wheel carrier (50) on which a wheel (12) is supported. In order to operate the vehicle (10) on an incline, a pivoting arrangement (44) is inserted between the wheel carrier (50) and the chassis (22). The pivoting arrangement comprises a mount (52), a pivot arm (54) mounted therein and an actuating arrangement (56) to move the pivot arm (54). The attachment points on the chassis (22) or on a support (46) spaced at a distance thereto and on the wheel carrier (50) are configured in such a way that the wheel carrier (50) can be directly attached to the chassis (22) or to the pivoting arrangement (44).

Body leveling suspension including a pivoting arrangement

A change speed gearbox for a combine or the like has a main clutch on its input shaft and a shift collar shiftable into alternate positions from a neutral position to establish different driving ratios in the gearbox. An electro-magnetic brake is engageable with the input shaft and is actuated only when the shift collar is in its neutral position and the clutch is disengaged. The brake circuit includes a relay switch that automatically opens a predetermined time after it closes, so that power is supplied to the brake only for a limited period when the clutch is disengaged and the gearbox is in neutral.

Arrangement for braking a gearbox component

An infinitely variable belt-type transmission for an agricultural machine or the like includes drive and driven pulleys and a pair of inversely variable diameter pulleys mounted on a shaft that is shiftable to vary the diameter of the pulleys and consequently the drive ratio of the transmission. The inner halves of the adjacent variable diameter pulleys are drivingly connected through a cam that exerts a force on the inner pulley halves tending to increase the pulley diameters and thereby increase the belt tension in response to an increase in torque transmitted through the transmission, and the shiftable pulley half on at least one of the pulleys is splined to its mating half so that the shifting movement in response to the torque increase results only in axial motion of the shiftable pulley half.

Growing community of inventors

Althornbach, Germany

Bernd Kempf